Table 2: Characteristic GC-MS fragments for relevant piperidine alkaloids and anthraquinones.
| Compound | Rt (min) | Match (%) | CAS No. | Note | Characteristic ions (abundance %) |
| Coniine | 4.55 | 86% | 458-88-8 | a | 127 (M+, 2), 126 (2), 98 (2), 84 (100), 70 (4), 56 (12) |
| γ-Coniceine | 5.25 | 90% | 1604-01-9 | b | 125 (M+, 13), 124 (10), 110 (35), 97 (100), 82 (13), 70 (28) |
| N-Methylconiine | 5.05 | 35305-13-6 | b | 141 (M+, 1), 112 (1), 99 (7), 98 (100), 70 (15) | |
| Conhydrine | 7.40 | 78% | 495-20-5 | a | 143 (M+, 7), 114 (4), 96 (3), 84 (100), 67 (3), 56 (22), 41 (11) |
| Chrysarobin | 19.44 | 97% | 491-59-8 | c | 240 (M+, 100), 225 (29), 211 (12), 197 (25), 194 (2), 181 (17), 165 (5), 152 (5), 139 (7), 127 (2), 120 (3), 115 (7), 111 (3), 105 (3), 97 (5), 89 (2), 82 (8), 76 (4), 74 (2), 69 (6), 96 (6), 53 (2), 51 (3) |
| Chrysophanol | 19.67 | 98% | 481-74-3 | c | 254 (M+, 100), 237 (5), 226 (11), 209 (1), 197 (10), 180 (3), 169 (3), 155 (2), 152 (9), 141 (6), 127 (5), 115 (7), 105 (2), 99 (3), 90 (2), 76 (4), 65 (2), 63 (5), 57 (4), 51 (3), 43 (5) |
aIdentified by comparison of retention time and mass spectra with reference material; bIdentified by comparison of spectra ([43] Palisade Complete 600K Mass Spectral Library); cIdentified by comparison of spectra (NIST Mass Spectral Search 2.0 Program).